20609280

素因数分解:

$2^8\times 3^2\times 5^1\times {\mathrm{1789}}^1$

素因数の和:1816

約数の個数: 108

約数和(自身を含む): 71345820

約数和(自身を除く): 50736540

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 64, 72, 80, 90, 96, 120, 128, 144, 160, 180, 192, 240, 256, 288, 320, 360, 384, 480, 576, 640, 720, 768, 960, 1152, 1280, 1440, 1789, 1920, 2304, 2880, 3578, 3840, 5367, 5760, 7156, 8945, 10734, 11520, 14312, 16101, 17890, 21468, 26835, 28624, 32202, 35780, 42936, 53670, 57248, 64404, 71560, 80505, 85872, 107340, 114496, 128808, 143120, 161010, 171744, 214680, 228992, 257616, 286240, 322020, 343488, 429360, 457984, 515232, 572480, 644040, 686976, 858720, 1030464, 1144960, 1288080, 1373952, 1717440, 2060928, 2289920, 2576160, 3434880, 4121856, 5152320, 6869760, 10304640, 20609280]

約数ペア:

[(1, 20609280), (2, 10304640), (3, 6869760), (4, 5152320), (5, 4121856), (6, 3434880), (8, 2576160), (9, 2289920), (10, 2060928), (12, 1717440), (15, 1373952), (16, 1288080), (18, 1144960), (20, 1030464), (24, 858720), (30, 686976), (32, 644040), (36, 572480), (40, 515232), (45, 457984), (48, 429360), (60, 343488), (64, 322020), (72, 286240), (80, 257616), (90, 228992), (96, 214680), (120, 171744), (128, 161010), (144, 143120), (160, 128808), (180, 114496), (192, 107340), (240, 85872), (256, 80505), (288, 71560), (320, 64404), (360, 57248), (384, 53670), (480, 42936), (576, 35780), (640, 32202), (720, 28624), (768, 26835), (960, 21468), (1152, 17890), (1280, 16101), (1440, 14312), (1789, 11520), (1920, 10734), (2304, 8945), (2880, 7156), (3578, 5760), (3840, 5367)]